Cooking Measurements Converter

Why Recipe Conversions Fail: The Cup Problem

The humble cup is the most dangerous measurement unit in cooking, because a "cup" does not mean the same thing everywhere. A US customary cup is 236.588 mL. An Australian or metric cup is 250 mL — about 5.7% larger. A UK cup (less commonly used) is also 250 mL. A Japanese cup (合, gō) is 180 mL. If you bake an American cake recipe in Australia using an Australian cup measure without converting, you are adding 5.7% more of every ingredient per cup — not enough to ruin a rough cookie recipe, but potentially significant in a soufflé or bread where hydration ratios matter. This tool uses the US customary cup (236.588 mL) as its standard, consistent with the most common source of English-language recipes online. Always check which cup your recipe assumes.

Tablespoons, Teaspoons, and the Confusing In-Betweens

The US tablespoon is 14.787 mL, and 3 US teaspoons = 1 US tablespoon (so 1 US teaspoon ≈ 4.929 mL). The relationship between tablespoons and cups: 16 tablespoons = 1 cup. An Australian tablespoon is 20 mL — significantly larger than the US standard. A UK tablespoon is 15 mL. These differences rarely matter for a pinch of salt but can affect baking results when recipes call for multiple tablespoons of baking powder, butter, or sugar. The situation is complicated further by dessertspoons (used in some UK and Australian recipes, ≈10 mL), which do not appear in US recipes at all. When following a recipe from an unfamiliar source, checking the origin country's tablespoon standard takes 10 seconds and can save a ruined dish.

Volume vs Weight: Why Professional Bakers Weigh Everything

Volume measurements in cooking are inherently imprecise for dry ingredients because density varies with packing. A cup of flour scooped directly from the bag can weigh anywhere from 120g to 170g depending on how tightly it was packed — a 40% range. A cup of flour spooned lightly into the cup and levelled weighs roughly 120–130g. This is why every serious baker and every professional recipe eventually gives weight measurements (grams or ounces) for dry ingredients. Liquid volumes are more reliable since liquids fill their containers without air gaps. This converter handles liquid volume units accurately. For dry ingredient weights, pair it with the Weight Converter which handles grams, ounces, and pounds. For broader liquid volume conversions including gallons and litres, the Volume Converter has a more complete unit list.

Scaling Recipes: Where Conversions Get Genuinely Useful

The most practical use of a cooking measurements converter is scaling recipes up or down. A recipe serving 4 that you want to serve 10 requires multiplying every measurement by 2.5. Three-quarters of a cup becomes 1¾ cups plus 2 tablespoons (0.75 × 2.5 = 1.875 cups = 1 cup + 14 tablespoons = 1¾ cup + 2 tablespoons). At this point, it is often easier to convert everything to millilitres, do the arithmetic, then convert back to practical cup/tablespoon combinations. A tablespoon of yeast for 4 people becomes 2.5 tablespoons for 10 — easier to measure as 2 tablespoons + 1½ teaspoons. This converter lets you quickly find these equivalent combinations.

Oven Temperatures Alongside Volume Measurements

When adapting recipes between US and other cookbooks, volume unit conversion often accompanies temperature conversion. A US recipe calling for 375°F oven temperature needs to be converted to 190°C for a European oven. A UK recipe calling for Gas Mark 5 (equivalent to 190°C / 375°F) needs conversion for an American oven. These temperature conversions are just as important as the volume unit changes when adapting international recipes. The Temperature Converter handles Celsius, Fahrenheit, and even the Réaumur scale that appears occasionally in very old French and German cooking manuscripts.

Cooking Measurement Quick Reference

• 1 US cup = 236.588 mL = 16 US tablespoons = 48 US teaspoons = 8 US fl oz
• 1 US tablespoon = 14.787 mL = 3 US teaspoons = ½ US fl oz
• 1 US teaspoon = 4.929 mL
• 1 US fluid ounce = 29.574 mL = 2 US tablespoons = 6 US teaspoons
• 1 US pint = 473.176 mL = 2 cups = 16 fl oz
• Australian tablespoon = 20 mL (vs US 14.787 mL — do not substitute directly)